SALOON. 
Nat. Hist. 
50 
(Case 49.) The greater part of this case is occu¬ 
pied by the ores of manganese, viz. — oocides : radi¬ 
ated grey manganese, some varieties of which re¬ 
semble the radiated antimony in the disposition of 
their acicular crystals ; foliated grey manganese ; 
compact manganese of various forms, botryoidal, 
tubercular, reniform, &c.; earthy grey manga¬ 
nese, a remarkable variety of which is the black 
*wad of Derbyshire and Devonshire, which has the 
property of inflaming spontaneously when mixed 
with linseed oil.— Silicates of manganese : the red 
compact varieties from Siberia (Werner’s mangan- 
spath), and from Kapnik (the red manganese of 
the same mineralogist).— Carbonate ofmanganese, 
phosphate , &c.—The lielvine , referred by some 
mineralogists to Bournon’s crichtonite, from 
which, however, it appears essentially to differ. 
In this case are also placed the ores of columbi- 
um or tantalum, of yttria and of cerium, &c. -Co- 
lumbite .-—the specimen from North America in 
which Hatchett discovered the metal (see Phil. 
Trans. 1802); yttriferous columbite or yttrotan- 
talite , from Bavaria, &c.—Silicate of yttrium: ga- 
dolinite , of which a unique crystal is here deposit¬ 
ed : pyrorihite and orthite , two scarce Swedish mi¬ 
nerals, related to gadolinite.— Cerite or cerine (si¬ 
licate of cerium) from Bastnaes in Sweden.— 
Yttracerite , a fluate of lime, yttria and cerium ; 
and a related mineral composed of fluate of yttria 
and oxide of cerium, with only a small portion of 
lime, but in which is often found a fluate of the 
new earth to which Berzelius has given the name 
of thoria .—Specimens of the oxide of chromium , 
in 
